Foot for shoe-sewing machines.



PATENTBD 00123, 1906'.

' F. W.PARKHURST.

FOOT FOR'SHOBSBWING MACHINES.

APPLICATION III |ED HAY 13.1905

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rs: Noam: RETIRE co., WASHINGTON, n. c,

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F. W. PARKHURST. FOOT FOR SHOE SEWING MACHINES. 1

APPLICATION FILED KAY13,1905. v

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No; 834,072. PATBNTED OCT. 23, 1906. F. W. PARKH'URST. FO OTFOR SHOE SEWING MACHINES.

APPLIOATION FILED MAYIB. 1905.

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.the machine UNrTsD STATES FRA K 7 Specification of Letters Patent.

PATENT OFFICE.

W. PARKHURST, or HALLOWELL, MAINE, ASSIGNOR OF ONE- HALF To R. M. JoHNsoN, or HALLOWELL, MAINE.

J; FOOT FOR SHOE-SEWING MACHINES.

rammed Oct. 23, 1906.

Application filed y 13. 1905. Serial No. 260,265.

To all whom it may concern.-

Be it known that I, FRANK W. PARK- HURST, of Hallowell, in the county of Kennebec and State of Maine, have invented certain new and useful Improvements" in Feet for Shoe-Sewing Machines, of which the followand guide the shoe in relation to the needle to position the line of stitches, the particular object being to render such foot laterally adjustable by the operator during the operation of stitching upon a shoe, so that the distance of the stitches from theside of the shoe may be varied. I

In some stylesof shoes which have extension-solesthe amount by which the soles are extended on different sides of the shoes vary, and in order that the line of stitching may be at approximately the same distance from the edge of the sole at all points it is necessary that the upper of the shoe against which the foot bears should occupy different positions with relation to the needle. This result is accomplished by the present invention, and the construction ofthe parts whereby it is attained is more articularly described in the following speci cation and illustrated in the drawings, in which- Figure 1 represents a side elevationof my improved guide and the manually-controlled operatin mechanism therefor attached 'to a fair-stitc sewing machine. sents a" sectional plan view of the same. Fig. 3 represents, a sectional elevation of the parts on-the right of the line 3 3 of Fig. 1. represents a perspective view of the head of having my attachment applied thereto. Fig. 5 represents a detail sectional elevationof the foot. Fig. 6 represents a horizontal section on line 6 6 of Fig. 5. Fig. 7 represents a horizontal section on line 7 7 of Fig. 1. Fig. 8 represents a sectional elevation on line 8 8 of Fig. l. Fig. 9 represents a vertical longitudinal section of the mechanism shown in Fig.8 on line. 9 9 of said figure.

, Fig. 2 repre-- :thebar.

Fig. 4

Fig. 10 represents a horizontal section on line 10 10 of Fig. 9. Figs. 11, 12, and 13 represent, respectively, a side elevation, a plan, and

a section on line 1313 of Fig. 12 of a modified ponstruction of actuating mechanism for the oot.

The same reference characters indicate the same parts in all the figures.

1 represents the base, 2 the column, and 3 the head of a fair-stitch sewing-machine.

4 is the needle, which reciprocates vertically in the head, and 5 the work-supporting table. Beside the needle is a vertical presser post or bar 6, on which is journaled a collar 7, which carries the presser-foot 8 and an indenting-tool 9 for making indentation between the stitches. The latter is operated and the foot raised and lowered to press the work upon the support in the manner common'to machines of this character, and therefore the mechanisms and permit feeding thereof,

which accomplish these results require no further description in this application. It may be said, however, that, as usual, the presserfoot presses down on the upper side of the sole of a shoeto clamp the sole to the worksupport While stitches are being taken and bears against the side of the upper to guide the shoe and position the line of stitches while the shoe is fed forward. Heretofore in machines of this character the foot corresponding to the foot 8 has been clamped rigidly to the reciprocating presser-bar 6; but in the present invention journal the collar 7, to which the foot 8 is rigidly connected, upon the lower end of the bar and retain it thereon by a screw 10 and washer 11. The lower end of the bar is reduced in diameter and extends partially through the collar 7, the latter having a flange 12 projecting across the end of Upon the collar are formed wings 13, which are drawn together to embrace the bar by means of a clamping-screw 14 and are held at such a distance apart as to prevent a tight frictional hold by means of a spacingpiece 15.

The head 17, upon which collar 7 and foot 8 are integrally formed, has an arm 18 extending laterally, to which is secured a strap 19, which fits over a tubular projection 20 of the arm and is clamped firmly in place by screws 2122, angularly arranged with respect to each other, the former of which is threaded into a tapped hole in the arm, while the axis'oi bar 6.

'vious.

the other bears upon a ortion of the surface of the arm. Journale upon a pivot 23 on the strap 19 is a connection 24, in which is journaled a wrist-pin 25, occupying a position at right angles to the pivot 23, and to the wrist is connected a link or connectingrod 26, which is adjustable in length. It will be perceived that the connection 24 .permits motion of the foot in all directions and that when the link 26 is moved the foot is oscillated about the bar 6 and its guiding. portion 27, which bears against the side of the shoe, is moved to a greater or less distance from the needle.

28 is a vertical rock-shaft mounted in bearings 29, which are removably attached to the machine, and on its lower portion it has a laterally-extending arm 30, provided with a stirrup 31, which is shaped to embrace the leg of the machine attend-ant. This arm is attached to the rock-shaft by a connection 32, having a collar embracing arm 30, and a second collar at right angles thereto embracing shaft 28, which permits the height and also the amount of lateral projection. of the stirrup to be adjusted in a manner that will be readily understood. Upon the upper end of the rock-shaft is an arm 33, connected J by a link 34 with a slide 35, movable between fixed guides 36. These guides are straight and constrain the slide to move in a straight line and in one of two opposite directions, depending upon the direction in which arm is swung. "There is also provided a second slide 37 adjacent the slide 35 and extending at right angles thereto, this slide being movable 1n a 'grndeway 38, so as to be reciprocable the'direction of its length. It is connected with the link 26 by means of a connection '39,having two pivots arranged in the same manner as in the connection 24, previously described. When the slide 37 is recipro *cated in the directio'nof its length by movement of slide 35, arm 26 is longitudmally ope-rated and the foot 8 is caused to turn about There may be a number of ways in which actuation of one of the slides causes the other 5 to move a direction at right angles to the 1" movement of the first, one of these forms of connections being illustrated in Figs. 1 to 1"0, which show a diagonal cam-groove 40 'formed the slide 35,-into which extends a l stud 41=on slide 37. The manner in whichi motion is produced in slide 37 will be obi In order to limit the amount by; which the slides and foot may be moved, provide a gear-segment 42, which meshesj with a rack 43, carried upon the slide 35.. This segment has an arm 44, which travelsan-a-rc-sha ed path, and adjacent the is a plate 4.5, i aving a number of holes 46, :arranged in an arcuate series, in which holes, may be put detachable pins 47, which pro-l -ject from the plate into the path of move-i slide movable in a ment of arm 44. When slide 35 has been moved far enough to carry arm 44 into contact with either of the pins, its movement is stopped and further movement of foot 8 consequently prevented. It will be easily seen that shifting the positions of the pins also varies the extent and position of the path of movement of the arm 44.

Another driving connection for operating the link 26 is shown in Figs. 11, 12, and 13, where is a stem connected to link 26 and having on a portion of its extent a screwthread 51. Rigidly fixed upon it is an arm 52, having a guiding-pin 53, which prevents rotation of the stem 50. The member 54, which corresponds to the segment member 42 of the other form, is centrally bored and tap ed to constitute a nut, which meshes with the screw-threads 51. When slide 35 is reciprocated, this nut member 54 is turned and stem 50 is moved in the direction of its length. The nut 45 also has an arm 55, similar to arm 54, for limiting the extent ol its angular travel. It will be evident that other forms of 'uiding attachment may also be provided Ior converting rectilinear motion of the slide 35 into motion at right angles thereto of the second slide.

In using my invention the operator stands with his knee or a portion of his leg in the stirrup 31 and holds the shoe upon the worksup ort 5 in contact with the foot 8, moving it a ong under the needle in the usual manner. When he has moved the shoe until a widelyprojecting port-ion of the sole comes adjacent the needle, he moves his knee in the proper direction so as through the connections above described to shift the portion 27 of foot 8 away from the needle. When a narrower portion of the sole is reached, the movement is reversed, and thus the line of stitching is kept at a substantially uniform distance from the edge of the solo. The holes 46 and pins 47 prevent the line of stitching from ever becoming too much displaced in one direction or the other.

Iclaim 1. In a fair-stitch shoe-sewing machine, stitching devices, a work-support, a workguiding presser-foot movable toward and from the work-support to clamp a shoe-sole thereon and laterally-movable,an arm adapted "to be manually operated laterally, and connections whereby movement of said arm moves the foot toward and away from said stitching devices without varying its-distance from the work-support, said connections being pivotally attached to permit movement of the foot toward and from the work-support relatively to said arm.

2. In a iair-stitch shoe-sewing machine, a slide movable in a straight line, a second direction perpendicular to that of the first slide, manually-operated means for moving said first slide, a movable pressing and' uiding foot adapted to bear upon the sole and againstthe shoe-upper to guide the work, means for moving the foot toward the sole for clamping the same, and connections between said second slide and the foot for moving the foot in one plane, constructed to permit movement thereof in another plane. 3. In. a sewing-machine, a slide movable in a straight line, a second slide movable in a direction perpendicular to that of the first slide, manually-operated means for moving said first slide, a movable foot connected for actuation by said second slide and adapted to bear upon and guide thework, and adjustable means for limiting the amount oi'movement of the slides.

4. In a fair-stitch shoe-sewing machine, a work support, a foot arranged to press against the extension of the sole and bear against the upper for clamping and guiding a shoe, and manuallyoperated means adapted to vary the distance between the foot and needle while a shoe is being operated on by the 'machine and without varying the distance between the foot and work-support, including connections constructed and arranged to permit movement of the foot independently of said means toward and from the work-support.

5. Inashoe-sewing machine, a work-support, a presser-bar perpendicular to said support, a presser-toot pivotally mounted on said bar to swing in a plane parallel to the work-support and-arranged to engage a shoeupper to guide the same, and manual means for varying its distance from the needle.

6. In a shoe sewing machine, a head mounted adjacent the needle, a work-guiding foot connected thereto and movable toward and away from the path of movement of the needle, an arm formed on said head, a strap connected by a screw to said arm and having a second screw at an angle thereto bearing against a surface of the arm, and means congrfiected to thestrap for moving said head and oot.

7. In a shoe sewing machine, a head mounted adjacent the needle, a work-guiding foot connected thereto and movable toward and away from the path of movement of the needle, an arm formed on said head having a lateral projection, a strap fitting over said projection, a screw beside the projection uniting the strap and arm, a setscrew threaded into the strap at anangle to the first screw arranged to press against a surface of the arm, and means connected to the strap for shifting the foot.

8. In a shoe-sewing machine, a foot movable laterally toward and from the path of motion of the needle, a slide movable in a path angular to that of the foot, a link connected at its ends respectively to the foot and slide having provisions for universal motion with respect thereto, and manually-op eratedmeans for moving said slide.

9. In a shoe-sewing machine, a foot movable laterally toward and from the path of motion of the needle, a slide movable .in a path angular to that of the foot, connections pivoted to said foot and slide respectively, a

. link joined at its ends to said connections by pivots perpendicular to those attaching the connections to the foot and slide, and means for reciprocating the slide.

10. In a shoe-sewing machine, a slide, a

secondslide movable perpendicularly thereto, means for communicating motion from one slide to the other, a pivoted guiding-foot connected for actuation by said second slide, and means for reciprocating said first slide.

v11. In a shoe-sewing machine, a slide, a second slide movable perpendicularly thereto,

-means for communicating motion from one slide to the other, a pivoted guiding-foot, a link pivoted to the second slide and foot with capacity for .movement in perpendicular planes relatively thereto connecting said slide and foot, and means for reciprocating the first slide.

12. In a shoe-sewing machine, a slide, a second slide movable perpendicularly thereto, means for communicating motion from one slide to the other, a pivoted guiding-foot, a pivoted knee-lever connected to reciprocate said first slide, and connections between sai second slide and footfor oscillating the latter.

13. In a shoe-sewing machine, a'plurality of slides movable'in straight lines at right angles to each other, a rock-shaft for reciproeating one of said slides, aknee-lever connected to said rock-shaft with provision for adjustment longitudinally and laterally thereof, connections between said slides whereby one is adapted to move the other, a pivoted work-guiding foot, and connections between the second slide and the foot for oscillating thelatter.

14. In a shoe-sewing machine, a manuallyoperated slide having rack-teeth, asecond slide reciprocated thereby in a difierent direction, a pivoted toothed member engaged with said rack-teeth, provided with an arm, stops located beside said arm ior'limiting the motion thereof and of the slides, and a workguiding foot connected to said second slide.

teethandinternally threaded, .a second slide for limiting the movement in either direction [0 having a threaded portionextending through of said slides and guide. and engaged with said rotary member, In testimony whereof I have afiixed my WhG'Gb}; the SQOOfild slide :is reciprocated persignature in-presence of two Witnesses.

5 pen icu ar y to at e first b movement thereof, a Work-guide connect d for actuation b FRANK PARKHURST' said second slide, a projection or arm extend Witnesses: ing from said rotary member, and stops ad- O. F. BROWN, justablylocated-on opposite sides ofsaid arm j s A. C. RATIGAN. 

